@Jespetersen: Two possibilities:
1) It's a guide dog. It looks like a labrador, and the heavy dog collar looks like one associated with a harness.
2) "Dog is my co-pilot".
I feel that pressing the wrong button isn't the issue, but irreversibility is. I wish rm was reversible: instead I have to fire up a GUI and delete it using point and click.

If you've ever wrangled a user interface, you've probably heard of Fitts' Law. It's pretty simple -- the larger an item is, and the closer it is to your cursor, the easier it is to click on. Kevin Hale put together a great visual summary of Fitts' Law, so rather than over-explain it, I'll refer...